Anatomy- Nervous System

Front 1

nervous system subdivision that is composed of the brain and spinal cord

Back 1

CNS

Front 2

subdivision of the PNS that acontrols voluntary activities such as the activation of skeletal muscles

Back 2

somatic nervous system

Front 3

nervous system subdivision that is composed of the cranial and spinal nerves and ganglia

Back 3

PNS

Front 4

subdivision of the PNS that regulates the activity of the heart and smooth muscle and of glands; it is also called the involuntary nervous system

Back 4

autonomic nervous system

Front 5

a major subdivision of the nervous system that interprets incoming info and issues orders

Back 5

CNS

Front 6

a major subdivision of the nervous system that serves as communication lines, linking all parts of thebody to the CNS

Back 6

PNS

Front 7

releases neurotransmitters

Back 7

axonal terminal

Front 8

conducts electrical currents toward the cell body

Back 8

dendrite

Front 9

increases the speed of impulse transmission

Back 9

myelin sheath

Front 10

location of the nucleus

Back 10

cell body

Front 11

genergall conducts impulses away from the cell body

Back 11

axon

Front 12

support, insulate and protect cells

Back 12

neuroglia

Front 13

demonstate irritablilty and conductivity and thus transmit electrical messages from one area of the body to another area

Back 13

neurons

Front 14

are amitiotic

Back 14

neurons

Front 15

able to divide; therefore are responsibe for most brian neoplasms

Back 15

neuroglia

Front 16

outermost covering of th brian, composed of tough fibrous connective tissue

Back 16

dura mater

Front 17

inner most covering of the brain; delicate and vascular

Back 17

pia mater

Front 18

middle meningeal layer; like a cobweb in structure

Back 18

arachnoid mater

Front 19

period of repolarization of the neuron during which it cannot respond to a second stimulus

Back 19

refactory period

Front 20

release neurotransmitters

Back 20

neurons

Front 21

state in which the resting potential is reserved as sodum ions rush into the neuron

Back 21

depolarization

Front 22

electrical condition of the plasma membrane of a resting neuron

Back 22

polarized

Front 23

period during which potassium ions diffuse out the neuron

Back 23

repolarization

Front 24

transmissino of the depolarization wave along the nueron's membrane

Back 24

action potential

Front 25

the chief ositive intracellular ion in a resting neuron

Back 25

potassium ions

Front 26

proscess by which ATP is used to move sodium ions out of the cell and potassium ions back into the cell; completely restores the resting condition of the neuron

Back 26

sodium-potassium pump

Front 27

patellar reflex

Back 27

somatic

Front 28

pupillary light reflex

Back 28

autonomic

Front 29

effectors are skeletal muscles

Back 29

somatic

Front 30

effectors are smooth muscle and glands

Back 30

autonomic

Front 31

flexor reflex

Back 31

somatic

Front 32

regulation of blood pressure

Back 32

autonomic

Front 33

salivary reflex

Back 33

autonomic

Front 34

what is brain protection for? (protections of the CNS)

Back 34

shock absorbers

Front 35

Layers of head

Back 35

dura mater, anarchnoid mater, subarachnoid space CSF, pia mater

Front 36

anterior horn

Back 36

somatic motor

Front 37

lateral horns

Back 37

autonomic motor

Front 38

posterior horn

Back 38

sensory

Front 39

steps of neuron impulses in the spinal cord

Back 39

1. stimulus
2. sensory/afferent nerve
3. interneuron association neuron
4. motor/efferent neuron
5. action effector

Front 40

parts of the brain stem

Back 40

midbrain, pons, medulla

Front 41

what does the brain stem do?

Back 41

connects parts of thenervous system; controls visceral activites

Front 42

function of midbrain?

Back 42

visual and auditory reflex centers

Front 43

function for pon?

Back 43

control of breathing

Front 44

function of medulla?

Back 44

cardiac, vascumotor and respiratory systems. heart rate, blood pressure, breathing, swallowing and vomiting

Front 45

dicencephalon (interbrain) does what?

Back 45

sensory info

Front 46

diencephalon consists of what?

Back 46

hypothalmus, thalamus, hippocampus, and amygdala

Front 47

function of hypothalamus?

Back 47

body temp, water balance, metabloism. drives and emotions

Front 48

funtion of thalamus?

Back 48

central relay center for sensory impulses-awareness of pain touch and temp.

Front 49

function of hippocampus?

Back 49

short-term mem

Front 50

function of hippocampus?

Back 50

short-term mem

Front 51

function of the amygdala?

Back 51

emotional center

Front 52

what is cerebrum?

Back 52

motor functions. higher though, mem and reasoning

Front 53

largest part of the brain?

Back 53

cerebrum

Front 54

parietal lobe

Back 54

somatic sensory area. understanding speech

Front 55

occiptal lobe

Back 55

visual area

Front 56

temporal

Back 56

auditory area, olfactoryarea. some mem.

Front 57

frontal lobe

Back 57

skeletal muscle movements. concentration, planning and problem solving. some mem. has broca's area

Front 58

what is broca's area?

Back 58

motor speech

Front 59

precentral gyrus

Back 59

controls broca's area

Front 60

postcentral gyrus

Back 60

sensory cortex; intergrating info

Front 61

fissures

Back 61

less numerou- deeper groves-divides part of the brain

Front 62

corpus callosum

Back 62

made up of white matter (to make info go faster).connects cerebral hemispheres so that they communcaite.

Front 63

cerebellum

Back 63

balance of body, coordination

Front 64

CNS

Back 64

brain and spinal cord. acts an intergrating and command center

Front 65

PNS

Back 65

spinal nerves, cranial nerves. links all parts of thebody by carrying impulses